<template>
<div class="cmt-container">
<h2>发表评论</h2>
<hr>
<textarea placeholder="输入你要BB的话，最多BB100个字" maxlength="100" v-model="msg"></textarea>
<mt-button plain size="large" type="danger" @click="postComment">发表评论</mt-button>
<div class="cmt-list">
    <div class="cmt-item" v-for="(item , i) in comments" :key="item.add_time">
        <div class="cmt-title">
            第{{i+1}}楼&nbsp;&nbsp;用户:{{item.user_name}}&nbsp;&nbsp;发表时间：{{item.add_time | dataFormat}}
        </div>
        <div class="cmt-body">
            {{item.content === '' || item.content === "undefined" ? '此用户懒到不想说话': item.content}}
        </div>
    </div>
</div>
<mt-button  size="large" type="primary" @click="getmore">加载更多</mt-button>
</div>
</template>

<script>
import { Toast } from 'mint-ui';
export default{
    data(){
        return{
            pageIndex:1,
            comments:[],
            msg:'',
        };
    },
    created(){
        this.getComments();
    },
    methods:{
        getComments(){
            this.$http.get('api/getcomments/' + this.id + "?pageindex=" + this.pageIndex).then(result =>{
                if(result.body.status === 0){
                    this.comments = this.comments.concat(result.body.message);
                }else{
                    Toast('获取新闻信息失败！')
                }
            })
        },
        getmore(){
            this.pageIndex ++;
            this.getComments();
        },
        postComment(){
            if(this.msg.trim().length === 0){
            return Toast("评论不能为空")
            }
            this.$http
            .post('api/postcomment/' + this.id,{content:this.msg.trim()})
            .then(result => {
                if(result.body.status === 0){
                    var cmt = {
                        user_name:'小明',
                        add_time: Date.now(),
                        content: this.msg.trim(),
                    }
                    this.comments.unshift(cmt);
                    this.msg = "";
                }
            })
        }
    },
    props:['id']
};
</script>

<style lang="scss" scoped>
.cmt-container{
    h2{
        color: cornflowerblue;
        text-align: center;
    }
    textarea{
        font-size: 15px;
        height: 100px;
        margin-bottom: 5px;
    }
    .cmt-list{
        margin-top: 7px;
        .cmt-item{
            font-size: 16px;
            .cmt-title{
                line-height: 30px;
                background-color: #ccc;
            }
            .cmt-body{
                line-height: 35px;
                text-indent: 2em;
            }
        }
    }
}
</style>
